Wi-Fi: Manage Wi-Fi AP priorities

AOSP has a basic LRU priority for Wi-Fi networks (last connected has more priority).
This changes added the ability of graphically set the priority of any of the configured
Wi-Fi networks through Settings -> Wi-Fi -> Advanced Settings -> Wi-Fi priority.

Port from cm-10.2:
* Added ic_grabber icons

Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Ief590e799cdb7ef760b631d0b22d9719f867393f

Conflicts:
	res/values/kang_strings.xml
	res/values/liquid_dimens.xml
Wi-Fi AP priorities: Add RTL support

Change-Id: Ie24f6e4fc37e2ffc9a0e830d4287fbe7b2935a63
Show connected to Wi-Fi hotspot devices

Change-Id: Icf51db5ae0204ed2bf153a5223aec986d3b496c4

Conflicts:
	res/values/kang_strings.xml